Salat Al Istikhaara

Question :
Taqriban 5 saal qabal mai aik kaam sy munsalik huwi. mai us din sy hi es kaam sy mutmain nahi hoon Qk mai kama huqqa is duty k ada kerny sy qasir hoon, lehaza chahti hoon k yh kaam chor ker koi aur kaam karon. is sy qabal k mai naye maidan amal k bary mai sochun mai namaz estakhara ada kerti hoon ra k mery qadam sahi khatot per aagy barh saken. is k baad tark amal k bary mujhy sharah sadar hujata hai aur mai amli tour per tabdeeli amal k liye kosha hujati hoon lekin jald hi mujhy hota hai k umeed ki tamam kirnain mand par gae hain aur her cheez pehli halat per lout ai hai. mai us wqt sy yh kaam chorny ki koshish ker rahi hoon lekin abhi tak koi faidah nahi huwa. mera sawal yh hai k kia is maqsad k liye namaz estakhara parhna jaiz hai ya nahi? agar jaiz hai to mery 5 saal is kaam per lagy rehny ki hikmat kia hai jab k mai issy pasand nahi kerti aur kisi tarha ki tabdeeli bhi ronuma nahi howi. barah-e-karam fatwa sy nawazain.

Question :
I have been at my place of work for about five years now and I am not happy with my situation. I would like to change my job because I am not able to fulfill it properly. Before I thought of moving to another place, I prayed Salat al-Istikhaara hoping that my steps would be on a firm foundation. My heart was resolved to leave that job and I stated to do so. However, every hope I had to leave was soon exhausted and everything returned to how it used to be. Since that time I have been trying to leave this job but without any benefit.
Is Salat al-Istikhaara in those circumstances permissible or not? If it is legally sanctioned, what is the Divine wisdom behind me staying in my work for five years while I hate it and have not had an opportunity to change it?